I have data in an Excel s/s and one of the sets of data has a different start
date. That is, i have 3 series that have data from 1991 - 2007 and a fourth
that has data from 1996-2007. How do I format this so as not to have a line
for the fourth data that runs along the x-axis and then steeply up to the
first values in 1996

thanks for your help